Check out http://www.turbomustangs.com for some ideas.
If they don't EFI it, they'll probably run a blow-thru carb, which there is a section dedicated to on the forum, and have to modify a Holley or can buy a pre-modified car.
There is a guy running a single turbo Blow-Thru carb Maverick. But I can't find that link.
Have your friend look in to superchager it will be around the same price if he get's a nice turbo kit But you can build a junk yard turbo for a 302 around 1200 alot of the mustang guys at my web site i go to just turn the stock header up side down and do it that way with the turbo coupe turbo or the svo, or the mustang gt turbo when you could get a gt with the 2.3L turbo before the svo but i will get you some pics of guys with there junkyared turbo kits they have made i hope this will help
On my new project I'm trying to turbocharger a 360 dodge. I have a HX35 holset turbo and Cummins intercooler, this combo going in a 85 daytona converted to rwd almost figure out the rearend area, just working on the front engine supports will have pics soon
I havent seen his car in about 3 weeks but he says he's got the headers reversed and cut. He said he's done a lot of cutting and welding under the hood to make room. If you happen to find the site with the turbo Maverick let me know and I'll print it off for him.
Thanks again for the help!
Single or twin? I'd go twin with a pair of JY T03's from the 2.3 fords. 60/63's will do great. and the price would be better than a big single setup correctly. If you do go single then on a 302 you will need a .81 or similar Turbine A/R or it will spool too late.